C2122121212121133131323331313113313233313231322331323113313232213231311   >>    C212212121212113313132333131311331323331323132233132311331323221323131   <<    C2122121212121133131323331313113313233313231322331323113313232213231313   >>      C2122121212121133131323331313113313233313231322331323113313232213231312   >>